28887412 has 12 divisors (see below), whose sum is σ = 52183936. Its totient is φ = 13977720.

The previous prime is 28887407. The next prime is 28887449. The reversal of 28887412 is 21478882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116358 + ... + 116605.

Almost surely, 2^28887412 is an apocalyptic number.

It is an amenable number.

28887412 is a deficient number, since it is larger than the sum of its proper divisors (23296524).

28887412 is a wasteful number, since it uses less digits than its factorization.

28887412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232998 (or 232996 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 28887412 is about 5374.7011079687. The cubic root of 28887412 is about 306.8335738135.

The spelling of 28887412 in words is "twenty-eight million, eight hundred eighty-seven thousand, four hundred twelve".